//LIBRARY : LiquidCrystal I2C

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Change address to 0x27 or 0x3F depending on your LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);

int counter = 0;

void setup() {
  lcd.init();          // Initialize LCD
  lcd.backlight();     // Turn on backlight

  lcd.setCursor(0, 0);
  lcd.print("I2C LCD Demo");

  delay(1000); // Pause before starting loop
}

void loop() {
  lcd.setCursor(0, 1);      // Row 1 (second line)
  lcd.print("Count: ");     
  lcd.print(counter);       // Display the counter value
  lcd.print("   ");         // Clear any old digits

  counter++;                // Increment counter
  delay(1000);              // Update every 1 second
}
// LCD - LIQUID CRYSTAL 
// GND - GROUND PIN (ANY)
// VCC - EITHER 3.3V OR 5V
// SDA - A4 ANALOG PIN (FIXED)
// SCL - A5 ANALOG PIN (FIXED)